Lock



A; G. DELFH AND R. C. HEMPHILI..

Patented July 18, 1922.

narran stares ASA DELPH ANI) ROBERT C. HEBPLL, OF KANSAS CTY, MISSOURI.y

rarest orties LOCK.

lasagnes..

application led July 5, 1921..

T 0 all 107mm t may concern.'

Be it known that we, Asa G. DELPH and ROBERT HniirniLL, citizens ot the United States, residing at Kansas City, in the coun ty of Jackson and State of Missouri, have invented. certain new and useful Improvements in Locks; and we do declare the following to'be a full, clear, and exact descrip# tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the ligures of reference marked thereon, which form a part of this specilication.

lThis invention relates to locks for doors and windows and the primary object thereof is to provide an ellicient means i'or locking a window or door, the means being so constructed that it will be normally held out ot operative position; that is, unless the window or door is tampered with, the lock will not become eil'ective but in the event that a burglar or other unauthorized person attempts to pry open the door or window, the lock.will be eliective to frustrate the attempt at illegal entry.

The invention contemplates broadly the conception of means for normally retracting a bolt or bolts but which will release the bolt or bolts whenever any one attempts to pry open the door or window.

The novel construction of the invention as well as the preferred forms of the same will be apparent by reference to the tollowing description in connection with the accompanying drawings, in which- Fig. 1 is a perspective view ot the outside of a window frame and window sash equipped with our invention.

Fig. 2 is an inside view of the same.

.F 3 is a sectional view on the line 3-3 ot Fig. 2.

Fig. l is an outside view of a door traine and door to which our invention is applied.

Fig. 5 is an inside view of the same, and

Fig. 6 is a sectional view on the line 6--6 oit Fig. 5.

In the construction shown in Figs. 1, 2 and 3, 1 is a window frame provided with the usual sash 2. The bottom rail 3 of the sash carries on the outside face a plate '-1, which. extends practically the length of the rail 3 and is connected to an equalizing bar 5 through the medium ot the elbow levers or cranks b and 7 so that when one portion of Specification of Letters Patent,

fthe ends of which raeeateaaaiy is, ieee.

Serial No. 482,373.

the springs 15 and 16 having` a tendency to` project the bolts in opposite directions to engage. any one of a number of recesses 17 in the side rails 18 and 19 of the window .traine 1.

liVhen `the parts are in the position shown in Figs. 1, 2 and 3 and any one attempts to pry open the window from the outside, the raising of the plateawill raise the latch 8, releasing the hooked ends 11 and 12 of the bolts 13 and 14C so that the springs 15 and 16 can project them into the openings 17 in the .rails ot the window frame, thereby constituting a lock which will prevent the sash from being raised. The bolts will normally be retractedby engagingthe end 10 of the latch 3 so that the window may be raised and lowered from the inside without fear of springing the bolts. The bolts will only open when released from engagement with the end. 10 of the latch 3.

ln Figs. et, 5 and 6, a bar 2U will be fastened to the outside of the door 21 and it may be provided with an equalizing link 22 connected to the bar 20 by the elbow levers 23 and 24. The bar 2O is also provided with a latch 25, connected to the bar 26 slidable in the guides 27 and 23 on the inside of the door and having a head 29,

which constitutes an abutment and spacer` between the spring-pressed rods 30 and 31,

engage the hooked portions 32 and 33 of spring-pressed bolts 34 and 35 at right angles to the roda 30 and 31. Therefore. when the plate 2O is pried in an attempt to irregularly open the door, the bar 26 will have a reoiprocatory motion imparted to it through the medium oi' the connecting link 25, to move. the head 29 out of engagement with the ends of the bars 30 and 31 so that they may be spring-actuated to withdraw the ends 'from engagement with the hooked portions 32 and 33 of the bolts 34 and 35. allowingthe springs 36 and 37 to project the bolts into the keepers 38 and 32 in the door frame 40, thereby locking the door so that it cannot be opened by prying.

It will also be apparent that the lock will Jfunction Whenever the guard bars 4 or 20 are tampered with or if any part of the equalizing mechanism is tampered with.

What We claim and desire to secure by Letters-Patent is:

l. ln combination, a frame having an opening and a movable closer for the opening, normally retracted, spring-actuated bolts on one side of the movable closer, a plate on the other side ot the movable closer extending to the edge thereof and adapted to normally lie in `juxtaposition to one edge of the trame, and means co-operating with the. plate for normally holding the bolts in retracted position but responsive to movement of the plate tor releasing said bolts to engage the trame.

2. The combination with a frame having an opening and a movable closer for the same, of a plate on one side ot the closer7 normally retracted, spring-actuated bolts on the other side of the closer, means connected to the plate and extending through the closer for releasing said bolts, and means on the trame tor engagement by said bolts.

3. ln a device of the class described, a Window sash locking device comprising a plate', a latch carried by the plate to extend through the sash, and normally retractablel` vspringactuated bolts releasably engaging one end of the latch.

el. In combination with a Window sash, a plate'carried by the bottom rail thereof, a latch extending through the bottom rail, oppositely urged bolts carried by the bottom rail and normally engaging the latch, the plate being effective to release the latch from engagement with the bolts to permit them to move into functional position, and keepers for engagement by said bolts.

ln testimony whereof We aliX our signatures.

ASA Gr. DELPH. ROBERT C. HEMPHILL. 

